well, this is many things, but it's definitely not a "1997" Centurion. Semi-Pro, maybe? Champion butted tubes were on the 70s higher end models, IIRC, same with the Cyclone mech if it's original.
Nice work with the bars and horn, by the way.
https://portland.craigslist.org/mlt/...146516216.html***CENTURION 1997 BIKE*** - $250 (NE PORTLAND)